1. Use non-woven fabric or PVC net: Common house cracks have little influence on the structural safety of houses. Such cracks only affect the internal beauty of the house and will not affect the safety of the house. Some compensation measures can be taken appropriately: stick non-woven fabric or PVC mesh cloth at the crack or plug the crack with mortar, then brush it and repair it with paint.
2. Use cement mortar and polymer mortar: When the settlement develops slowly and tends to weaken after the settlement cracks appear, the cracks should be corrected after the cracks are stabilized. The foundation of the new house will be gradually stabilized in 2-5 years.
3. Use wallpaper adhesive: the paint film of the external wall is cracked, and the cracks are polished off with fine sandpaper and brushed from the beginning.